The word for today is…
functionary (noun):
1: one who serves in a certain function
2: one holding office in a government or political party
Source : Merriam -Webster
Etymology : For most of us, being described as a functionary wouldn't be a compliment. The word refers especially to a person of lower rank, with little or no authority, who must carry out someone else's orders. Bureaucrat is often a synonym. However, functionary can also refer to the world beyond government and offices; a character in a play, for example, could be called a functionary if it was obvious that her sole function was to keep the plot moving.
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